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Conference star::wizards

Title: "ASK THE WIZARDS"
Moderator:QUARK::LIONEL
Created:Mon Oct 30 1995
Last Modified:Mon May 12 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1857
Total number of notes:3728

1551.0. "Open: v7 exe work on v 6.2?" by STAR::JKEENAN () Tue Feb 11 1997 08:33

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Subject: Ask the Wizard: '[email protected]'
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Name: Alan Pritchard
Email Address: [email protected]
CPU Architecture: VAX
Version: v 6.2
Questions: 

We may soon be forced by one of our software suppliers 
(for support purposes) to upgrade to OpenVMS 7.0 on VAX.

We have quite a few other applications and quite simply
the questions I have are as follows:-

1)In general will OpenVMS 7.0 executables be able to 
  work on VMS 6.2 systems (as I understand that there 
  are  significant changes to libraries in 7.0)

2)I believe DEC plan to merge the 6.2 and 7.n streams in
  the future. Are there any timescales available for this
  happening AND WHAT ARE THE PLANS FOR THE 6.n stream
  of releases (I've heard rumor that a VMS 6.3 is planned 
  - is this correct ?)  

Regards .... Alan Pritchard

T.RTitleUserPersonal
Name
DateLines
1551.1Backward Compatibility Not SupportedXDELTA::HOFFMANSteve, OpenVMS EngineeringTue Feb 11 1997 12:1523
   Running images created on later versions on earlier versions is not
   supported.

   It is sometimes possible to link images created on later versions
   against RTLs from earlier versions, and the resulting images often
   work.

   OpenVMS Alpha V6.2 and V6.2-1Hx features and support are contained
   in OpenVMS Alpha V7.1 -- OpenVMS Alpha V7.0 predates OpenVMS Alpha
   V6.2-1Hx series, and does not contain any support that was added
   in the V6.2-1Hx series.

   There were no hardware releases for OpenVMS VAX, and OpenVMS V7.0
   contains all of prior OpenVMS VAX releases.  (There are far fewer
   changes in the OpenVMS VAX V7.0 kernel than were made in the OpenVMS
   Alpha V7.0 kernel.)

   I am not aware of any plans for an OpenVMS V6.3 release, nor am I
   aware of any assembled release engineering nor release management
   team for any such release.  Work is, however, proceeding for an
   upcoming OpenVMS release after OpenVMS V7.1.